171 lines
4.4 KiB
C
171 lines
4.4 KiB
C
/* Copyright (C) 2001-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/profil.h>
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#include <bits/wordsize.h>
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#define NELEMS(a) (sizeof (a)/sizeof ((a)[0]))
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size_t taddr[] =
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{
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0x00001000, /* elf32/hppa */
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0x08048000, /* Linux elf32/x86 */
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0x80000000, /* Linux elf32/m68k */
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0x00400000, /* Linux elf32/mips */
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0x01800000, /* Linux elf32/ppc */
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0x00010000 /* Linux elf32/sparc */
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#if __WORDSIZE > 32
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,
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0x4000000000000000, /* Linux elf64/ia64 */
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0x0000000120000000, /* Linux elf64/alpha */
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0x4000000000001000, /* elf64/hppa */
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0x0000000100000000 /* Linux elf64/sparc */
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#endif
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};
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unsigned int buf[NELEMS (taddr)][0x10000 / sizeof (int)];
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unsigned int bshort[5][0x100 / sizeof (int)];
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unsigned int blong[1][0x1000 / sizeof (int)];
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unsigned int vlong[1][0x2000 / sizeof (int)];
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static long int
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fac (long int n)
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{
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if (n == 0)
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return 1;
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return n * fac (n - 1);
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}
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int
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main (int argc, char **argv)
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{
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unsigned int ovfl = 0, profcnt = 0;
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struct timeval tv, start;
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struct prof prof[32];
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double t_tick, delta;
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long int sum = 0;
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int i, j;
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for (i = 0; i < NELEMS (taddr); ++i)
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{
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prof[profcnt].pr_base = buf[i];
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prof[profcnt].pr_size = sizeof (buf[i]);
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prof[profcnt].pr_off = taddr[i];
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prof[profcnt].pr_scale = 0x10000;
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++profcnt;
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}
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prof[profcnt].pr_base = blong[0];
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prof[profcnt].pr_size = sizeof (blong[0]);
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prof[profcnt].pr_off = 0x80001000;
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prof[profcnt].pr_scale = 0x10000;
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++profcnt;
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prof[profcnt].pr_base = bshort[0];
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prof[profcnt].pr_size = sizeof (bshort[0]);
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prof[profcnt].pr_off = 0x80000080;
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prof[profcnt].pr_scale = 0x10000;
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++profcnt;
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prof[profcnt].pr_base = bshort[1];
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prof[profcnt].pr_size = sizeof (bshort[1]);
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prof[profcnt].pr_off = 0x80000f80;
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prof[profcnt].pr_scale = 0x10000;
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++profcnt;
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prof[profcnt].pr_base = bshort[2];
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prof[profcnt].pr_size = sizeof (bshort[2]);
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prof[profcnt].pr_off = 0x80001080;
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prof[profcnt].pr_scale = 0x10000;
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++profcnt;
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prof[profcnt].pr_base = bshort[3];
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prof[profcnt].pr_size = sizeof (bshort[3]);
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prof[profcnt].pr_off = 0x80001f80;
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prof[profcnt].pr_scale = 0x10000;
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++profcnt;
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prof[profcnt].pr_base = bshort[4];
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prof[profcnt].pr_size = sizeof (bshort[4]);
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prof[profcnt].pr_off = 0x80002080;
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prof[profcnt].pr_scale = 0x10000;
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++profcnt;
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prof[profcnt].pr_base = vlong[0];
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prof[profcnt].pr_size = sizeof (vlong[0]);
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prof[profcnt].pr_off = 0x80000080;
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prof[profcnt].pr_scale = 0x10000;
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++profcnt;
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/* Set up overflow counter (must be last on Irix). */
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prof[profcnt].pr_base = &ovfl;
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prof[profcnt].pr_size = sizeof (ovfl);
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prof[profcnt].pr_off = 0;
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prof[profcnt].pr_scale = 2;
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++profcnt;
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/* Turn it on. */
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if (sprofil (prof, profcnt, &tv, PROF_UINT) < 0)
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{
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if (errno == ENOSYS)
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exit (0);
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perror ("sprofil");
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exit (1);
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}
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t_tick = tv.tv_sec + 1e-6 * tv.tv_usec;
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printf ("profiling period = %g ms\n", 1e3 * t_tick);
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gettimeofday (&start, NULL);
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do
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{
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for (i = 0; i < 21; ++i)
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sum += fac (i);
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gettimeofday (&tv, NULL);
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timersub (&tv, &start, &tv);
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delta = tv.tv_sec + 1e-6 * tv.tv_usec;
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}
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while (delta < 1000 * t_tick);
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printf ("sum = 0x%lx\n", sum);
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/* Turn it off. */
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if (sprofil (NULL, 0, NULL, 0) < 0)
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{
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if (errno == ENOSYS)
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exit (0);
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perror ("sprofil");
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exit (1);
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}
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printf ("overflow = %u\n", ovfl);
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for (i = 0; i < NELEMS (taddr); ++i)
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for (j = 0; j < 0x10000 / sizeof (int); ++j)
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if (buf[i][j] != 0)
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printf ("%0*Zx\t%u\t(buffer %d)\n",
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(int) (sizeof (size_t) * 2),
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(taddr[i] + ((char *) &buf[i][j] - (char *) &buf[i][0])),
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buf[i][j], i);
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return 0;
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}
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